| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 081477000 | Work engaging portion attached to and turned by resilient member | 11 |
| 20080302219 | STRUCTURE OF A WRENCH - The present invention relates to a structure of wrench, which is mainly that a handle extends out from one side of a driving head integrally, a plurality of forefront surfaces and grooves are disposed around the internal periphery of the opening of the driving head in an interlaced order, and the forefront surfaces each has a concavity disposed on the middle portion of the protruded curved surface thereof. The concavities have different shapes from grooves and both are to be used to accommodate a workpiece. Besides, projected stop parts are provided on inside of the opening, with which the objectives of being suitable for various workpieces in multiple specifications and preventing the workpieces from passing through the driving head randomly would be achieved. | 12-11-2008 |
| 20090000433 | SAFETY SPANNER - A safety spanner comprises a head for driving an object; a handle connected to the head; the handle including a first body with a length of L1 and second body with a length of L2; the handle further including a first hollow space and a second hollow space; the first hollow space being in the first body and has a length of L and a diameter of φA; the second hollow space being extended from the first body to the second body; a section of the second body near the head being a solid section without any hollow space; the other section of the second body other than the solid section being a non-solid section; the second hollow space having a length of L3 and a diameter of φ B. L1>L and L2>L3, further φ A>φ B. | 01-01-2009 |
| 20100031787 | Tool Holding Device - A tool holding device is suitable to have an application with a power tool. The tool holding device includes a toolholder for receiving a bit. A sleeve is disposed outside the toolholder and is operable to move between a first position which allows for removal of the bit and a second position which allows the bit to be securely retained in the cavity of the toolholder. A returning member is disposed circumferentially between the toolholder and the second section of the sleeve for returning the sleeve to a neutral position between the first and second positions. Moreover, the sleeve of which does not surround the returning member abuts the toolholder. | 02-11-2010 |
| 20100126318 | WRENCH FOR PROVIDING A FIXED OR ADJUSTABLE MAXIMUM TORQUE | 05-27-2010 |
| 20100147118 | Double-fulcrum torque wrench - A double-fulcrum torque wrench including a tubular body, a head section for fitting with a socket or a screwing member and a flexible mechanism including a flexible section. The flexible mechanism is connected with a rear end of the head section and disposed in the tubular body. The head section protrudes from a front end of the tubular body. When a wrenching force is applied to the wrench, the flexible section of the flexible mechanism is flexible. The head section and the flexible mechanism are connected with the tubular body via two fulcrums and the flexible section is positioned between the two fulcrums. By means of the double-fulcrum design, the action force at the force application end of the wrench is equal to the action force at the resistance end. In addition, the flexure of the wrench and the actual wrenching torque applied to the wrench can be more accurately and sensitively measured. | 06-17-2010 |
| 20100275744 | TORQUE WRENCH FOR IMPLANTABLE MEDICAL DEVICES - A torque wrench for implantable medical devices is disclosed. The torque wrench comprises a first and a second component. The first component has first and second ends with a bore extending between the first and second ends of the first component. The first component includes a plurality of anti-rotation members extending from an inner surface of the bore at the second end of the first component. A second component includes a middle portion having a first and second ends. A drive shaft extends from the first end and a plurality of fingers extends from an exterior surface of the second end. The second component is received in the bore of the first component such that the fingers are interdigitate with the anti-rotation members. | 11-04-2010 |
| 20100275745 | TORQUE WRENCH FOR IMPLANTABLE MEDICAL DEVICES - A torque wrench for implantable medical devices is disclosed. The torque wrench comprises a first and a second component. The first component has first and second ends with a bore extending between the first and second ends of the first component. The first component includes a plurality of anti-rotation members extending from an inner surface of the bore at the second end of the first component. A second component includes a middle portion having a first and second ends. A drive shaft extends from the first end and a plurality of fingers extends from an exterior surface of the second end. The second component is received in the bore of the first component such that the fingers are interdigitate with the anti-rotation members. | 11-04-2010 |
| 20100275746 | TORQUE WRENCH FOR IMPLANTABLE MEDICAL DEVICES - A torque wrench for implantable medical devices is disclosed. The torque wrench comprises a first and a second component. The first component has first and second ends with a bore extending between the first and second ends of the first component. The first component includes a plurality of anti-rotation members extending from an inner surface of the bore at the second end of the first component. A second component includes a middle portion having a first and second ends. A drive shaft extends from the first end and a plurality of fingers extends from an exterior surface of the second end. The second component is received in the bore of the first component such that the fingers are interdigitate with the anti-rotation members. | 11-04-2010 |
| 20130239761 | L-SHAPED TORSIONAL WRENCH - An L-shaped torsional wrench is provided. The wrench includes a shell body, an elastic member, an L-shaped rod and a handle. A pushing member is assembled in the shell body and is movable between a first position and a second position along the shell body. The elastic member is compressed by the pushing member when the pushing member is located in the first position for compressing the elastic member. The pushing member is noncompressed by the elastic member when the pushing member is located in the second position so that the elastic member recovers from said compression for slowing the fatigue of the elastic member, extending the durability of the elastic member and keeping the torsional accuracy of the wrench. | 09-19-2013 |
| 20140190320 | WRENCH FOR PROVIDING A FIXED ADJUSTABLE MAXIMUM TORQUE | 07-10-2014 |
| 20170232594 | Multiple-Slope or Multiple Offset Tool Mechanism | 08-17-2017 |
